* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  background: linear-gradient(135deg, #1e3c72, #2a5298);
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}

.container {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  padding: 30px;
  border-radius: 20px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.25);
  width: 100%;
  max-width: 450px;
  animation: fadeIn 1.2s ease-in-out;
}

h2 {
  text-align: center;
  margin-bottom: 20px;
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: 1px;
}

label {
  display: block;
  margin: 12px 0 6px;
  font-weight: 500;
}

select, button {
  width: 100%;
  padding: 12px;
  border-radius: 12px;
  border: none;
  margin-bottom: 15px;
  font-size: 1rem;
  transition: all 0.3s ease;
}

select {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  cursor: pointer;
}

select:hover {
  background: rgba(255, 255, 255, 0.25);
}

option {
  color: #000;
}

button {
  background: #ffce00;
  color: #222;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}

button:hover {
  background: #ffd633;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0,0,0,0.35);
}

audio {
  width: 100%;
  margin: 15px 0;
  border-radius: 12px;
  outline: none;
}

/* Progress bar */
.progress-container {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 5px;
  cursor: pointer;
  margin: 10px 0;
  position: relative;
}

.progress-bar {
  width: 0%;
  height: 100%;
  background: #ffce00;
  border-radius: 5px;
  transition: width 0.2s linear;
}

.time-display {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  opacity: 0.85;
}

/* Footer */
.footer {
  margin-top: 25px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.8;
  background: rgba(255, 255, 255, 0.08);
  padding: 12px;
  border-radius: 15px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  animation: fadeIn 1.8s ease-in-out;
}

.footer p {
  margin-top: 5px;
  font-size: 0.8rem;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}